What are the essential goals of disk scheduling?Why is each important?
What will be an ideal response?
Tomaximize throughput (to have as many requests serviced per unit time as possible),
to minimize the mean response time (to provide rapid responses to disk requests), and to
minimize the variance of response times (to provide predictability and avoid indefinite postponement).
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Answer the following statement true (T) or false (F)
Bank teller machines rely on using information on the user’s card giving the bank identifier, the account number and the user’s personal identifier. They also derive account information from a central database and update that database on completion of a transaction. Using your knowledge of ATM operation, write Z schemas defining the state of the system, card validation (where the user’s identifier is checked) and cash withdrawal.
What will be an ideal response?